Cash register



March 24, 1931. E. J. VON PEIN CASH REGISTER Original led Nov. 16, 1925 3 Sheets-Sheet l jwuenfoz Edward .1. Von Pein March 24, 1931. E N PE|N 1,797,536

CASH REGISTER Original Filed Nov. 16, 1923 5 Sheets-Skgeet 2 F|G.3 Q l gwoento'v Edward J. Van Pein March 24, 1931. E. J. VON PEIN CASH REGISTER 1925 3 Sheets-Sheet 3 Original Filed Nov. 16

FIG. 4

mm W mu. m n n m 0 O H M a Patented Mar. 24, 1931 UNITED STATES PATENT OFFICE EDWARD J. VON PEIN, OF DAYTON, OHIO, ASSIGNOR TO THE NATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO, CORPORATION OF MARYLAND CASH REGISTER Original application filed November 16, 1923, Serial No. 675,158. Divided and this application filed June 14, 1926. Serial No. 115,903..

This invention relates to improvements in printing mechanism adapted for use. with cash registers and like machines.

The subject matter of this application constitutes a division of the co-pending application of the same inventor, Serial No. 675,158, filed November 16, 1923.

One object of this invention is to provide an improved method of operating a plurality of printer impression hammers;

lVith this and incidental objects in View, the invention consists of certain novel features of construction and combinations of parts, the essential elements of which are set forth in appended claims and a preferred form or embodiment of which is hereinafter described with reference to the drawings which accompany and form part of'this specification.

Of said drawings Fig. 1 is a transverse section of the machine taken to the left of the totalizer.

Fig. 2 is a detail view of the driving connecti on between the key coupler and the cam shaft.

Fig. 3 is a sectional view taken between the right side frame and the printer frame, showing a portion of the printer impression hammer mechanism.

Fig. 4 is a side elevation of the printer mechanism, and a part of the driving mechanism.

Fig. 5 is a side elevation of the interlock mechanism shown in the moved position.

In general mechanisms, and a driving means. The keyboard includes a plurality of groups of item or amount keys 20 pivoted on a transverse rod 21 mounted in the side frames of the machine. The rear ends of the keys are adapted to engage a'key coupler 22 which swings on trunnions 23 Journaled in the side frames of the machine. Actuator operating arms 24, connected to the rear ends of the keys, are adapted to engage rods 25 carried by rocker frames connected to totalizer actuators 26.

The totalizer actuators are normally in mesh with gears 27, connected with the item printing wheels 28 (Fig. 4) by a tube line to set up the amounts represented by the keys depressed. The key coupler 22 carries a roller 29 mounted on its right hand side (Fig. 2) which cooperates with a slot in a driving double rack 30. The driving double rack rotates a shaft 31 in the usual manner, as is well known in the art.

The amounts represented by the keys depressed are also entered in a totalizer 37 mounted in a frame 38 (Fig. 1) pivotally supported on trunnions 39 supported in a frame cross bar of the machine.

The totalizer is of a well known form for this type of machine, and is provided with totalizer elements having pinions 40 engaging the actuators 26 at the proper time, to enter the items registered by the keys.

Resting'on the rear ends of the keys 20 are the usual tablet indicators 11 which are elevated to display positions when the keys are operated.

A driving shaft 59 (Figs. 3 and l) is rotated ina counter-clocluvise direction by a gear 71 secured to the shaft and in mesh with a pinion 72 secured to a sleeve 73 freely mounted on a stud 7 4 supported by the printer frame 75. The pinion 72 may be driven by a crank 76, clutched to the sleeve 73. The crank 76 is shown in broken lines in Fig. st, and illustrated and described in a Von Pein Patent No. 1,664,955, dated April 3, 1928.

Interlocking mechanism As the item keys and the driving means must be operated in a certain sequence, an interlock is provided between these two operating means. Secured to the right hand trunnion of the key coupler, outside the printer v ment of the arm 92 frame 75, is an arm (Fig. 4) carrying a pin 81 which connects the arm 80 with an arm 82 pivotally mounted upon the trunnion 28. The lower end of the arm 82 carries a rollerr83 contacting the upper edge 84 0f a lever85 fulcrumed on a stud 86 projecting from the printer frame 75. he lever 85 is provided with a rearwardly extending arm "88, norinallyheld'in thepath'of a lugj 89'on the side of the gear 71,'by'an arm 92, pivoted on the trunnion 23. A stud 91, on the arm 92, is held against the forwardend of the lever 85, as shown in Fig. 4;,by asp-ring 98 stretchedbetween a stud on 511681111 92 and a stud 99 on the frame 75, the stud 99 projecting through a'notch 100 in the lever 85. The spring-98, through the stud 91, tends to cam the lever 85 ,clocl-:-wis'e,;but this movement of the lever 85is-liiiiited by the contact -of the right-handwall of the-notch 100 with the stud -99, andtherefore, the counter-clockwise movement of-the arm 92 isliniited by the stud 91 contacting the forward edge of the lever'85. Thus, the spring 98, through ,the arm 92 and stud 91, holds the lever 85 in a positionasdeterminedby the stud 99, in

whichpositiOn the arm 88 prevents rotation of the gear 71,-and, consequently, prevents rotation of the cam shaft 59.

As the arm 82 is rocked counter-clockwise ,hy'the keycoupler, the roller 83 wipes across the top of the lever 85 and in this manner the lever 85 is moved counter-clockwise to cause therearwardly extendingfarin=88 of tlie le'ver 85-to .move out ofthe path of the lug 89 secured to the gear 71. V

ihe counter-clockwise movemen or the lever 85, aCtli1g-O11jh8 SllHCllll, rocks the arm clockwise until the forward edge of the lever 85 passes the stud 91, whereupon the arm is rocked'countenclockwiseby thespidng 98', until the stud 91 restson the end. of the lever 85, as shown in Atter the arm 82has been returned "to its noi'i-nal' position,-the arm 92 maintains the lever 85 in the moved position. T he left wall of the notch contacts the stud-.99 when the lever 85-ismoved to'the position shown inFi g. 5,thus limiting the counter-clockwise movement thereof, and since the stud 91 rests against the end 90 of the-lever 85, the moveis also limited by the stud WVith the lever :85 in this operated position (Fig. 5) the driving crank 76 previously reterred to is freeto rotate the drivingshatt 59. As this shaft rotates counter-clockwise, the lug 89, which has a PI'OjeC'tiiighOSG 98, contacts the-lower arm-94 of the lever 85 and forces this lever to return to its normal position, in'wl'i'ich'position the driving means will bs disabled when the lug' 89 again contacts the-arm 88. V l

The clockwise movement of the lever 85 to its'noriiial position, removes-the end 90 there the stud 9, thus. again limiting the movements of the lever 85 and arm 92.

Another interlocking feature is provided', whichallows but one operation of the item keys to each operation of the driving means. A s rin -actuated arm 95 ivotall mounted upon the stud 86, has a laterally projecting pin 96 engaging a shoulder formed on the lever 85. As the lever 85 is moved counter-clockwise, as previously described, the arm 95 will engage the pin 81 (see Fig. 5) and restupon this pin during the counterclockwise movement of the arm 82. During the return or clockwise movement of the arm 82, the arm 95 will move counter-clockwise.

until the pin 96 again engages the shoulder on the lever 85, in which position an end 97 of the arm 95 will be in the path of the pin 81 to prevent second movement of the arm 82 the operation of an item key. The re-..

turn of. the lever85 to its normal position will return the arm 95 to the position shown in Fig. 1.

Printing mechanism Only so iniichof the printing mechanism is disclosed in Fig. 4 as enters into-the inven- -tion here-involved, the printer b'eii g'iully described and illustrated in the Von Pein ap-' plioation Serial No. 67 5,158, previously re terred to. flhetype wheels 28, previously de scribed, print the 1 66111895 they are entered, both upon, a record strip 103 retained within the'maeh'ine and an issuing strip 104.

' The record strip 108 is fed from a supply.

105 around guide rollers 106 and. onto a receiving roll 10'? in the usual manner. The issuing strip'lt akis fed from a supply roll (not shown) around a guide roller 108 and between-a feeding roller 109 and a tension roller 110. The tension roller 110 is carried on a pivoted arm 111 and held in contact with the feeding roller 109 bya spring 112.

The feeding roller 109 moves. counterclockwise at each operation of the machine, and retrograde motion of this roller is prevented by a spring-actuatedpawl 118 which engages a ratchet wheel 11 1 secured to the ieeding roller 109. This feeding roller is secured to'a shaft 115 1ournaled in the printer frame 7 The feeding roller is operated by a ,spring-tensioned' pawl 116 (Fig; 3) coopcrating with a ratchet wheel 102 pinned to the shaft 115. The pawl is pivoted on a lever 117 pivotally inountedaipoii the sliatt115.

Secured tothis lever is pinion 118 which meshes Wlbh segment :arni 119.pivoted on a StUClZlQO supported by the frame workof-the machine. This arni119 is oscillated at each operation of the machine-bytwo cans 1.21

iio

and 122 engaging rollers 123 and 124, respectively, which are mounted upon studs carried by the segment arm 119.

The records are made upon the record strip 103 and the issuing strip 104 by the aid of an inking ribbon 125 which passes partly around a feeding roller 126, over guide rollers supported in the printer frame and under a tension roller 131 carried by an arm 132 pivoted at a point 133.

The impressions upon the record strip and the issuing strip are made simultaneously by spring-actuated impression hammers 134 and 135. Impression hammer 134, which causes the impression to be made upon the record strip 103, is pivoted upon a stud 136 mounted in the printer frame and has an ear 137 engaging a spring plunger 1238 supported in a bracket 139 secured to the printer frame. A downwardly extending arm 140 from the impression hammer 134 contacts a pin 141 (Figs. and 4) to return the impression hammer 134 to its normal position and re tain it in such position after an operation.

The impression hammer 135, which causes the impression. to be made upon the issuing strip 104, is pivoted upon a stud 146 supported by the printer frame, and has a rearwardly extending arm with a lug 147 engaging a s n'ing-actuated plunger 148 supported by a bracket 149 secured to the printer frame. in upwardly extending arm 150 from the impression hammer 135 contacts a pin 151 which returns the impression hammer to its normal position and retains it there after an operation of the machine.

T 1e pins 141 and 151 are carried by a lever 152 (Fig. 3) which is fulerumed on a stud 153 supported by the frame of the machine. This lever 152 has a flat sided pin 154 which engages a spring-pulled latch 155 pivoted on a. stud 156. This latch retains the lever 152 in its normal position, as shown in Fig. 3, and the impression hammers 134 and 135 under spring tension, as shown in Fig. 4. [is the shaft 31 (Fig. 3) rotates (OllllilOI-CIOCIC- wise during the operation of any item key 20 (Fig. 1), a pin 15S carried by a disk 157 secured to the shaft will engage an arm 159 extendin downwardly from the latch 1T 5, and cause the latch to move clockwise on its pivot and become dis gagel from the fiat sided pin 154. At this time a cam 161 engages a nose 150 on the lever 152 and retains the impression hammers until the shoulder 162 of the cam 161 passes the nose which then permits the spring plungers 138 and 148 (Fig. 4) to operate the impression hammers 134 and 135 to print upon the record strip 103 and the issuing strip 104.

The purpose of having the nose 160 on the lever 152 quickly drop from the high part of the cam 161 to the low part, is to afford a springing hammer blow upon the type wheels.

During the operation of the driving mechanism the impression hammers are returned to their normal positions by an upwardly extending arm 168 of the segment arm119 (Fig. 3). As this arm is moved counterclockwise, the arm 168 will engage the flat sided pin 154 and return the lever 152 to a position to enable the latch 155 to again engage the flat sided pin 154 and retain the impression hammers in their normal positions until the next operation of. the machine.

0 oration In operating the machine, the operator depresses the item keys 20 corresponding to the value of the transaction, and allows them to return to normal positions. This causes the item to be entered in the totalizer, displayed by the indicators and printed on the record strip and the issuing strip. Operation of the keys 20 also releases the driving shaft 59 which is then operated by the crank 76, to complete the transaction by feeding the issuing strip and restoring the impression hammers to normal position, and operating other parts of the mechanism.

\Vhiie the form of mechanism'herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form or embodiment herein disclosed, for it is susceptible of embodiment in Various forms all coming within the scope of the claims which follow.

What is claimed is:

1. In a machine of the class described, in combination, item entering means, a type carrier adapted to be positioned by said item entering means, an impression hammer adapted to make an impression from said type carrier, means for normally retaining said hammer under tension, a latch for holding said retaining means effective, means operated by said item entering means for releasing said latch to permit the impression hammer to operate. a driving means operated separately from said item entering means, and means operated by said driving means for returning the lit) hammer retaining means to normal position. I

and through the returning movement of said hammer retaining means, returning said impression hammer to normal position.

2. In a machine of the class described, in combination, item entering means, a type carrier adapted to be positioned by said item entering means, an impression hammer normal ly under spring tension and adapted to cooperate with said type carrier to make impressions, a swinging member normally effective to hold said impression hammer in normal position, a latch engaging said swinging member to retain it in normal position, means operated by said item entering means for releasing said latch, a driving means operated separately from said item entering means, and means operated by said driving means to restoresaidswinging member to its normal position.

3.111 a'machine of the class described, the combination of a plurality of lever keys, type carriers adapted to be positioned by said lever keys, a single impression hammer normally under spring tension and adapted to cooperate with said type carriers to make an impression, a pivoted member adapted to hold said impression hammer in normal position, a latch engaging said pivoted member to retain it in normal position, means operated by said lever keys for releasing said latch, a driving shaft operated separately from said lever keys, and a pivoted member operated by means secured to said driving shaft for operating said first pivoted member to return said impression hammer to its normal position.

4. In a machine of the class described, the combination of a plurality of lever keys, a type carrier adapted to be positioned by said lever keys, an impression hammer normally underspring tension and adapted to cooperate With said type carriers to make an impression, a pivoted member adapted to hold said impression hammer in normal position, a latch engaging said pivoted member to retain it in normal position, means operated by said lever keys for releasing said latch, a driving shaft operated separately from said lever keys, a pivot-ed member operated from said driving shaft for returning said impression hammer to itsnormal position, means for normally disabling said driving shaft, means operated by said lever keys to render said disabling means ineffective on the depression of said keys, and means for maintaining said disabling means in the ineliective position after said item keys return to normal.

5. In a machineof the class described, in combination, item entering means, atypecar- 'rier adapted to be positioned by said item entering means, aplurality of normallyretracted, springrpressed impression hammers adapted to make impressions from said type carrier, means for normally retaining said han'nners under tension, a latch for holding said retaining means effective, means operated by said item entering means for releasing said latch to permit the impression hammers to operate, a driving means operated separately iromsaid item entering means, means operated by said driving means for returning said impression hammers to normal positions, means for normally disabling said operating means, and means'to render said disabling means ineffective by the operation of said item entering means.

. 6. In a machine of the class described, the combination of a pl-urality'of lever item keys, type carriers adapted to be positioned by said keys, an impression hammer normally under spring tension and adapted to cooperate with said type carriers to make an impression,

EDWARD J. VON PEIN,

disabling said i no 

